[Eeglablist] How phase is calculated in linear decomposition

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Thu Jul 6 14:31:13 PDT 2017

Dear Robert and list,

If I remember correctly, one of the critical issue was how phase changes in
'channel data' after removing independent components. Let me focus on this
point only.

1. To show my rebuttal and mathematical proof, I prepared a wiki page. In
this page. I described how a phase is split/synthesized before and after
linear decomposition. Note that this applies to any linear decomposition
and not specific to ICA. In doing so, made it nice and educational to show
my respect to Arno's effort. Hopefully this mathematical clarification


Robert, if you do not agree,* please show the right process in a form of

2. Apart from this scientific/mathematical dispute, I insist that one
should not use the word 'distortion' in this context because it includes
subjective judgement.


Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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